“We cannot be overheard here,” De Grost remarked. “It must be an affair of a few words only, though.”

Monsieur de Lamborne wasted no time in preliminaries. “This afternoon,” he said, “I received from my Government papers of immense importance, which I am to hand over to your Foreign Minister at eleven o’clock to-morrow morning.”

The Baron nodded.

“Well?”

De Lamborne’s thin fingers trembled as they played nervously with the ribbon of his eye-glass.

“Listen,” he continued, dropping his voice a little. “Bernadine has undertaken to send a copy of their contents to Berlin by to-morrow night’s mail.”

“How do you know that?”

The ambassador hesitated.

“We, too, have spies at work,” he remarked, grimly. “Bernadine wrote and sent a messenger with the letter to Berlin. The man’s body is drifting down the Channel, but the letter is in my pocket.”

“The letter from Bernadine?”